WordPress 4.1 development is under way. See the release schedule for the key dates.

Here’s an overview of the headline features for this release. If you’d like to get involved with mockups, design, development, documentation, testing – anything really – see the users and tickets listed below each item.

This is actually a great list, execpt for the “focus” thing (have to see it live for myself) I totally welcome all improvements here personally. Really looking forward to it!
Thank you all for your hard work on this release cycle!

Great stuff to look forward to.
If you are evaluating Select2 to be included in core (was hoping for that a long time) you might want to talk to the maintainers/devs on what changes Select2 4.x will bring.

Welcome to Make WordPress Core!

This is the official blog for the core development team of the WordPress open source project. Follow our progress with weekly meeting agendas, project schedules, and the occasional code debate.